Page 302 - ICSE Math 8

37. The reflection of (4, –3) about x-axis is
(a) (4, –3) (b) (–4, 3) (c) (–4, – 3) (d) (4, 3)
38. The rotation of a point A(–3, 2) about the origin through an angle of 90° (anticlockwise) will result in

(a) (–2, 3) (b) (–2, –3) (c) (2, –3) (d) (2, 3)
39. The diameter is equal to
(a) 2 × radius (b) radius ÷ 2 (c) p × 2 (d) (radius) 2
40. Given that diameter of a circle is 10.6 cm, what will be its radius?
(a) 5.3 cm (b) 5.03 cm (c) 5.4 cm (d) 5.6 cm
41. The perimeter of a rectangle is 32 m and its length is 10 m. What will be its breadth?
(a) 3 cm (b) 4 cm (c) 5 cm (d) 6 cm
42. What will be length of the diagonal of a rectangle whose length and breadth are 8 cm and 6 cm?
(a) 7 cm (b) 10 cm (c) 8 cm (d) 6 cm

3
3
43. If the weight of 1 cm of ice is   3   g, then what will be the weight of 12,000 cm of ice?
 10 
(a) 3.6 kg (b) 36,000 g (c) 3.06 kg (d) 360 g
44. How many packets of biscuits of dimensions 5 cm × 4 cm × 2 cm can be placed inside a box of volume
15,40,000 cu cm?
(a) 35,800 (b) 36,058 (c) 38,500 (d) 36,400
45. Which is true of an exclusive class interval?
(a) The upper limit of one class is the upper limit of previous class

(b) The lower limit of one class is the upper limit of next class
(c) The upper and lower limits of two classes are same
(d) The lower limit of one class is the lower limit of previous class
46. A class interval is given by 0–4, 5–9, 10–14, etc. It is
(a) an exclusive class interval (b) an inclusive class interval
(c) raw data (d) continuous data
47. The probability of a sure event is always
(a) 0 (b) 0.5 (c) 1.5 (d) 1
48. The probability of withdrawing an ace from a deck of 52 cards is
12 1 1 1
(a) (b) (c) (d)
52 13 4 2

SHORT ANSWER TYPE QUESTIONS
1. How many rational numbers exist between any two given numbers?
2. Divisibility of rational numbers by which number is not defined?

 − 2  − 3
3. What is the reciprocal of   ?
 5 
–7
4
4. Find the value of (2) × (2) .
5. What is the square root of 0.09?
6. Which is the smallest number by which 98 must be divided to make it a perfect square?
125
7. Find the cube root of .
343

290